Can Periods Be Delayed Intentionally? Yes, they can. The most commonly used medications are progesterone based hormones, such as: Norethisterone Medroxyprogesterone acetate These are usually started 35 days before the expected date Mesenchymal stem cells: opening a new chapter in the treatment of gynecological diseases Stem Cell Research & Therapy Springer Nature Link Frontiers Mechanisms of endometrial aging: lessons from natural conceptions and assisted reproductive technology cycles What may be the reason for a menstrual delay?